Fill in the blank with the most appropriate option:He met me with the bird in his hand. It _____ curiously at me.

The correct answer is Option B: was looking. The sentence is in the past tense, and the action of the bird looking curiously at me is portrayed as an ongoing action that happened at the same time as the action of him meeting me. Therefore, the past continuous tense "was looking" is the most appropriate choice to convey this sense of simultaneity.

The other options are not correct:
A. looks (Incorrect) - This is in the present simple tense and does not match the context of the past event described.
C. has been looking (Incorrect) - This is in the present perfect continuous tense and is not suitable for describing an action in the past.
D. would look (Incorrect) - This is the conditional tense and is not appropriate for the context of the sentence.